<span>This means the length of the side of an area, a rectangle, for example, is always the same.
Hope this helps!</span>
Answer:
Correct choice is B
Step-by-step explanation:
In step 4 were proved that 
By definition, similar triangles have proportional lengths of corresponding sides. To the side AB corresponds side ED, to the side AC corresponds side DC and to the side BC corresponds side EC. Thus,

The answer would be 60. By rounding, 14.2=14; 15.51=16; 14.99=15; 15.8=16.
14+15+16+16=61
Rounding: 61=60
Answer:
C) Volume
Step-by-step explanation:
Volume of any three dimensional figure is defined as its capacity.
Here, if we take the figure of a 3D Prism,
Here,
Perimeter = Sum of all sides
Total Area = sum of Area of all triangles
Volume = Length x Breadth x Height = Product of dimensions
then Multiplying all its dimensions will give us its volume.